Choose the letter A, B, C, or D to indicate the sentence that best combines the following pair of sentences.

The disease poses a significant challenge for medical researchers. It currently has no cure.

A. True

B. False

A. under

B. over

C. besides

D. next to

A. Do you still remember the hotel which we stayed there last summer?

B. Do you still remember the hotel where we stayed last summer?

C. Do you still remember the hotel when we stayed last summer?

D. Do you still remember the hotel who we stayed there last summer?

A. I really like this dress that looks very elegant.

B. I really like this dress where it looks very elegant.

C. I really like this dress when it looks very elegant.

D. I really like this dress whose looks very elegant.

A. The lady and her cats who were rescued were in the house when the earthquake struck.

B. They rescued the lady and her cats which were in the house when the earthquake struck.

C. The lady and her cats that were in the house when the earthquake struck were rescued.

D. Having been rescued, the lady and her cats were in the house when the earthquake struck.

A. I have been to that town, where is the oldest town in Britain.

B. I have been to that town that is the oldest one in Britain.

C. I have been to that town the oldest one in Britain.

D. I have been to that town, which is the oldest town in Britain.

A. I don’t remember the man, whom you said you met at the canteen last week.

B. I don’t remember the man whom you met at the canteen last week.

C. I don’t remember the man whom you said you met at the canteen last week.

D. I don’t remember the man, who you said you met at the canteen last week.